Wood scraping and smoothing machine



No. 750,294..` PATENTBD JAN.26,190-4. N. J. MATT-HIESEN. l Woonvsclmsmm. AND'SMOOTHING MAGHlNE.

APPLICATION FILED JAN. 27, 1903.

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' woon SGRAPING AND SMOOTHING MACHINE.

APPLIUATION FILED JAN. 27, 190s.

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Patented january 26, i904.

UNITED' STATES PATENT OFFICE.

NICKELS J. MATTHIESEN, OF CLINTON, IOWA.

WOOD SCRAPING AND SMOOTHING MACHINE.

SPECIFICATION forming part of Letters Patent No. `750,294, dated January26, 1904. Application tiled January 27, 1903. Serial No. 140,773. (N0llwel-l T0 all whom it may concern:

Be it known that I, NIoKELs J. M ATTmEsEN, a citizen of the UnitedStates, residing at Olinton, in the county of Clinton and State of Iowa,

have invented a new and useful Wood Scraping and Smoothing Machine, ofwhich the fol-V machine of simple construction and thoroughly-eiiicientaction in which are combined a series of scraping devices mounted on anendless chain and sandpapering devices, together with means for drivingthe said scraping and sandpapering devices, and improved means foradjusting the elements of the machine for operating upon material ofvarying thicknesses and for varying the force of contact of the scrapingand sandpapering devices With the material.

In order tofully explain my invention, attention is directed to theaccompanying drawings, forming a part of this specilication, in whichnFigure 1 is a plan view of a machine constructed after my invention.Fig. 2 'is an end View taken from the left of Fig. l. Fig. 3 is an endview taken from the right of Fig. l. Fig. 4 is a transverse verticalsection along the line 4 4 in Fig. 1, and Fig. 5 is a longitudinalvertical section through the endless chain and cutters. Y

In the above-mentioned iigures similar parts are indicated by the samecharacters of reference throughout. z i

The supporting-frame of my machine (indicated at 1) is of common formand has at the top a feed-bed 2, through which, extend longitudinally aseries of openings 3 3 3 forV feed-rollers suitably mounted in thesupporting-frame 1, and a Wider channel 4, through which travels theendless chain carrying the scraping -cutters. Arranged obliquely betweenthe rearmost feed-roll and that next in front of it is an opening 5, inwhich the sandpaper-roll rotates. The endless carrier 6 is supportedupon pulleys 7 and 8, Whose axles rest in bearings aorded by brackets 99 and 10 10, projecting from the ends of the supporting-frame. Attachedto the endless carrier at short intervals are scraper-carrying blocks12, each of Which is grooved on either` side at 13 for the passage of aguide member, to be more fully described hereinafter. The Scrapers 15are mounted obliquely upon the blocks in the manner shown and .may besecured thereto in any convenient Way.

' To insure the proper contact of the scraping-cutters 15 with the Workas it 4advances over the feed-bed 2, a channel for the travel of saidblocks is provided at 16, as best shown in Figs. 4 and 5. This channelor trough 16 is provided at the bottom With a passage-Way for theendless carrier 6 and has a guiding-rib 17 at either side to engage withthe grooves 13 in the sides of the scraper-carrying blocks. By means ofthe ribs on the sides of the guidechannel and the corresponding groovesin the scraper-blocks any sideWise yielding or vertical movement of theblocks is prevented and the movementof the blocks is accuratelydetermined. In order to compensate for the Wear on'the scraper-blades,the guide-channel is made vertically adjustable by means of the shaft18, having at either end a pinion 19, en-

gaging With a rack 20 upon the supportingstandard 2l oftheguide-channel. These supporting-standards 21 have vertical movement inWays 22, provided at either end of the machine. Motion is imparted tothe shaft 18 by means of a Worm-gear 23 at thel middle of said shaft,the. said Worm-gear being operated by means of a hand-Wheel 24 on thecrossshaft 25. Y

The sandpaper-carrying roll Q6 has an axle 27 journaled in thesupporting-frame of the machine. The roll 26 is arranged obliquely withreference to the line of travel of the scraping-cutters, as alreadystated, in order to remove more eifectively any scratches which may beleft upon the surface of the wood by the scraping-cutters.

The means for feeding Work over the scraping and smoothing mechanismsconsists of feed-rolls 29, mounted in the openings 3 in the feed-bed,andcorrespondingly-placed feedrolls 30, supported in a frame 31 above thefeed-bed and susceptible of vertical adjustment by means of anyconvenient form of.

Yroll and a belt 37, which transmits motion to a counter-shaft 39through a pulley 38, mounted thereon. The belt 36 passes overidler-pulleys 40, provided with flanges 41 to prevent lateral slippingof the belt thereon, and a similar pulley 42 on the axle of thesand-roll 26. On the left end of the counter-shaft 39 is provided apulley 43, over which travels a belt 44 for imparting motion to one ofthe feed-rolls 30, and from this feed-roll motion is transmitted bymeans of belts and pulleys arranged in the ordinary manner to the otherfeed-rolls 30. Motion is imparted to the feedrolls 29 by means of thebelts and pulleys arranged as shown in Fig. 3. At the right end of theshaft 39 is abeveled gear 47', which engages with a similar gear 48 atthe end of a short shaft 49, which forms an axle for the pulley 8, andis supported at one end in bearings in the brackets 10 10 and at theother in a bracket 50.

In using my improved scraping and smoothing machine motion is impartedto the main driving-shaft from any suitable source of power and thencethrough the various connecting devices above described to thefeed-rolls,

the traveling chain carrying the scraperblocks, and to the sand-roll.The Wood to be smoothed is introduced at the front of the machinebetween the feed-rolls and is carried backward over the rapidly-movingScrapers, thence to the sand-roll, and finally out between thefeed-rolls at the rear of the machine. In this operation one side willhave been dressed to the desired state of smoothness, and if it isdesired to dress the other side also the operation must be repeated.

The mode of securing the scrapers to the scraper-blocks as well as themanner of securing the sandpaper to the sand-roll may be of any approvedkind. No specific means for doing either has been described in detail,and no claim will be laid to any such means.

What I do regard as my invention, and desire to secure by LettersPatent, is-

1. rIhe combination in a machine of the class described, of asupporting-frame, a feedbed mounted on said frame and having transverseopenings therein,feed-rolls mounted in openings in said bed, an endlessbelt traveling below said bed, means for imparting movement to saidbelt, a plurality of scraper-blocks mounted on said belt, each of saidblocks having on the face thereof a rib disposed obliquely to the lineof travel of the blocks and having the forward surface thereof inclinedrearwardly, and a plurality of scraping-cutters mounted upon the ribsupon said scraperblocks.

2. The combination in a machine of the class described of asupportingframe, feed mechanisms carried by said frame, an endless chaindisposed transversely of said supportingframe, scraper-blocks mounted onsaid chain, scraping-carriers secured to said blocks, guiding means forsaid blocks comprising a trough having a rib on each side extendinglongitudinally thereof and engaging corresponding grooves on saidblocks, and means for adjusting the height of said trough,rsaidadjusting means comprising a shaft disposed transversely of the mainframe and having a gear at each end, rack-bars extending downward fromsaid trough and meshing with said gears, and a worm-gear intermediatethe ends of said shaft, and a counter-shaft connected with the shaftcarrying the gears by means of said worm-gear, substantially asdescribed.

3. The combination in a machine of the class described, of asupporting-frame having a feed-bed provided with transverse openings, anendless belt traveling beneath said bed near the forward portion of themachine, a plurality of scraper-blocks mounted on said belt andtraveling in an opening' in said bed, a sandroll mounted in an openingin said bed near the rear thereof, a main driving-shaft rotatablymounted in said frame beneath said belt, a counter-shaft at the rear ofsaid frame, a second counter-shaft at one side of said frame,bevel-gearing connecting said counter-shafts, a pulley on the last-namedcounter-shaft over which the scraper-carrying belt travels, a pulley onthe first-mentioned counter-shaft, a pulley on the sand-roll, aplurality of pulleys on the main driving-shaft, and' belts extendingfrom the pulleys on the main driving-shaft to the pulley on thefirst-mentioned counter-shaft and to the pulley on the sand-roll,whereby motion is imparted to the sand-roll and to said counter-shaft.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two witnesses.

NICKELS J. MATTHIESEN.

Witnesses:

CHARLEs F. CURTIS, GEORGE W. ALLEN.

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